Pressure dependence of the effective charge of ionic crystals

Batana, Alicia; Faour, J.

doi:10.1016/0022-3697(84)90093-3

Cited by 18 publications

(2 citation statements)

References 12 publications

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“…In good agreement with this, Batana & Faour (1984), Talwar & Vandevyver (1990) and Kucharczyk (1991) showed by spectroscopic methods that effective atomic charges usually decrease under pressure. Alkali halides show progressive narrowing of the band gap under pressure (Asaumi & Mori, 1983;Jeon et al, 1987) and tend towards metallization.…”

Section: Solid-state En As a Function Of Pressuresupporting

confidence: 77%

Solid-state electronegativity of atoms: new approaches

Бацанов¹,

Batsanov²

2021

Acta Crystallogr Sect B

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Electronegativities (EN) of 65 elements (H to Bi, except lanthanides and noble gases, plus U and Th) in solids were derived from various observed parameters, namely, bond energies in solids, structural geometry, work functions and force constants, yielding a set of internally consistent values. The solid-state electronegativities are generally lower than the conventional (`molecular') values, due to different coordination numbers and electronic structure in a solid versus a molecule; the decrease is stronger for metals than for non-metals, hence binary compounds have a wider EN difference and higher bond polarity (ionicity) in the solid than in the molecular (gaseous) state. Under high pressure, the ENs of metals increase and those of non-metals decrease, the binary solid becomes less polar and can ultimately dissociate into elements.

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Section: Solid-state En As a Function Of Pressuresupporting

confidence: 77%

Solid-state electronegativity of atoms: new approaches

Бацанов¹,

Batsanov²

2021

Acta Crystallogr Sect B

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“…Attempts to estimate the pressure (or volume) variation of s were made by Jones [55], Barron and Batana [56], Mitra and Namjoshi [15], and Batana and Faour [57]. The starting point in all these works is the differential form of eq.…”

Section: Pressure Variation Of Smentioning

confidence: 99%

Fifty years of Szigeti’s dielectric theory — A review

Sirdeshmukh

Subhadra

2007

Pramana - J Phys

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During the period 1949During the period -1961 Szigeti published four seminal papers on the dielectric behaviour of crystals. Szigeti's theory is applicable to isotropic and anisotropic, ionic and covalent crystals with different structures. Szigeti's theory connects dielectric, spectroscopic and elastic properties. An important outcome of Szigeti's theory is the concept of the effective ionic charge (s). It is pointed out that s correlates with a number of physical properties and is a measure of ionicity of the interatomic bond. Since Szigeti's work, several theoretical models have been proposed to account for the fact that s < 1. These models provide an insight into the complex polarization mechanisms in solids. This review summarizes Szigeti's work and the work that followed; the implications and applications of Szigeti's theory are discussed. Some new results are also included.

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Dielectric Constants and Their Pressure and Temperature Derivatives for Ionic Crystals

Shanker¹,

Dixit²

1991

Phys. Stat. Sol. (a)

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Pressure dependence of the effective charge of ionic crystals

Cited by 18 publications

References 12 publications

Solid-state electronegativity of atoms: new approaches

Solid-state electronegativity of atoms: new approaches

Fifty years of Szigeti’s dielectric theory — A review

Dielectric Constants and Their Pressure and Temperature Derivatives for Ionic Crystals

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